90 lines
2.8 KiB
Python
90 lines
2.8 KiB
Python
# Copyright 2010-2025 Google LLC
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" Bazel rules for building swig files."""
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def _py_wrap_cc_impl(ctx):
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srcs = ctx.files.srcs
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if len(srcs) != 1:
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fail("Exactly one SWIG source file label must be specified.", "srcs")
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module_name = ctx.attr.module_name
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src = ctx.files.srcs[0]
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inputs = set([src])
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inputs += ctx.files.i_includes
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for dep in ctx.attr.deps:
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inputs += dep.cc.transitive_headers
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inputs += ctx.files._swiglib
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inputs += ctx.files.toolchain_deps
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swig_include_dirs = set(_get_repository_roots(ctx, inputs))
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swig_include_dirs += sorted([f.dirname for f in ctx.files._swiglib])
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args = [
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"-c++",
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"-python",
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"-module",
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module_name,
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"-o",
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ctx.outputs.cc_out.path,
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"-outdir",
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ctx.outputs.py_out.dirname,
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]
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args += ["-l" + f.path for f in ctx.files.i_includes]
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args += ["-I" + i for i in swig_include_dirs]
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args.append(src.path)
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outputs = [ctx.outputs.cc_out, ctx.outputs.py_out]
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ctx.actions.run(
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executable = ctx.executable._swig,
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arguments = args,
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inputs = list(inputs),
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outputs = outputs,
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mnemonic = "PythonSwig",
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progress_message = "SWIGing " + src.path,
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)
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return [
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DefaultInfo(files = depset(outputs)),
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]
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_py_wrap_cc = rule(
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attrs = {
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"srcs": attr.label_list(
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mandatory = True,
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allow_files = True,
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),
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"swig_includes": attr.label_list(
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allow_files = True,
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),
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"deps": attr.label_list(
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allow_files = True,
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providers = ["cc"],
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),
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"toolchain_deps": attr.label_list(
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allow_files = True,
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),
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"module_name": attr.string(mandatory = True),
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"py_module_name": attr.string(mandatory = True),
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"_swig": attr.label(
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default = Label("@swig//:swig"),
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executable = True,
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cfg = "exec",
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),
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"_swiglib": attr.label(
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default = Label("@swig//:templates"),
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allow_files = True,
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),
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},
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outputs = {
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"cc_out": "%{module_name}.cc",
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"py_out": "%{py_module_name}.py",
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},
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implementation = _py_wrap_cc_impl,
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)
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